New 2.5L Turbo GM Engine In The Works: Exclusive
14
Sponsored Links
A new GM engine is currently in its final stages of development, GM Authority has exclusively learned from sources familiar with the matter.
The planned GM engine will be a turbocharged 2.5L four-cylinder powerplant. It will be part of The General’s CSS or Cylinder Set Strategy engine family, which currently consists of four models.
The table below lists the CSS or Cylinder Set Strategy GM engine family, including maximum horsepower and torque.
| Turbo 1.3L I3 | Turbo 2.0L I4 | Turbo 2.7L I4 | Turbo 2.7L I4 | Turbo 2.7L I4 | |
|---|---|---|---|---|---|
| L3T | LSY | L2R | L3B | L3B | |
| Max Horsepower | 155 @ 5,600 | 237 @ 5,000 | 237 @ 5,600 | 310 @ 5,600 | 325 @ 5,500 |
| Max Torque | 174 @ 1,600 | 258 @ 1,500 to 4,000 | 260 @ 1,200 to 4,000 | 430 @ 3,000 | 380 @ 2,000 to 4,000 |
Set to carry RPO code LK0, the new GM engine is expected to produce healthy amounts of torque and horsepower, similar to the L3B engine.
Among the other powerplants in the family, the turbocharged 1.3L I3 L3T engine is used to provide motivation for smaller vehicles like the Chevy Trailblazer and the Buick Encore GX. The turbocharged 2.0L I4 LSY gasoline engine is suited to a wider range of applications, powering the Buick Envision, Cadillac CT4, Cadillac XT4, Cadillac XT5, Cadillac XT6, Chevy Blazer, and GMC Acadia.
The family also includes a pair of 2.7-liter powerplants. The turbocharged 2.7L I4 L2R gasoline engine is a cost-effective version of the L3B and can be used in vehicles up to the size of a full-size pickup, serving as an option for the Chevy Colorado.
Finally, the turbocharged 2.7L I4 L3B gasoline engine is a clean-sheet design GM engine and has a high-output version generating extra torque for light-duty pickup trucks and possibly other vehicles.
The L3B is found in the Cadillac CT4-V (where it develops 325 horsepower and 380 pound-feet of torque), the Chevy Colorado, the Chevy Silverado 1500, the GMC Canyon, and the GMC Sierra 1500. GM Authority exclusively discovered that the recently updated L3B engine will actually make 430 pound-feet of torque in the 2022 Silverado 1500 and 2022 Sierra 1500, instead of 420 pound-feet originally announced.
Subscribe to GM Authority for more GM technology news, and around-the-clock GM news coverage.
Sponsored Links
I keep hearing about torque this and torque that. How about MPG. None of these 4 cylinder turbo engines listed really impresses for combined or highway mileage figures with the 2.7 in the mid size truck especially bad. It’s also bizarre that they are making a 2.0T and a version of the 2.7T that make nearly identical power and torque. Why? And that begs the question what is another mid way variant going to offer to justify its existence and tooling/development costs?
This is just an example of GM being foolish again.
The CAFE fines on the 2.7 Turbo in the Colorado are going to bite.
I’m under the impression that the Colorado will get much better economy for the 2025MY as it makes no sense how the 2.7 turbo gets significantly worse economy that the 2.5 NA from last year despite being very similar engines, except the 2.7 adds AFM, VVL, and active thermal management.
My only quess is that the EPA was taking so long that GM made a deal to have them torpedo the MPG for this year and will reevaluate for the remainder of this year
That or the “TRIPower” engine line is a complete failure from the bones down and needs to be canned for good.
i assume this will be for the next gen crossovers? it wouldn’t make sense for gm to offer another 4 cyl for the trucks that makes less power.
Yes. For lighter duty applications than the 2.7l. More compact for the same reason.
The 3.6 V6 will eventually go away.
How will it be more compact? The 2.7 is already mostly a 2.5L LCV that’s stroked out and a turbo added. What their doing is going back to the old crankcase and keeping the same heads/block/turbo.
The main thing here is likely just FWD optimization. The 9t60 maxes out at we believe 330TQ, so the L3B will rip its guts out, and the L2R has no advantage over the 3.6. This probably will allow a lower TQ rating, but if they keep the same size turbo, they can rev it higher to keep the 300 HP. It’s either that or building a whole new transmission that can take the torque and this is the cheaper route
I’ve also felt this will be setup for FWD / AWD applications like the next gen Traverse. The 9t60 is a good trans but going to a higher output engine will hopefully also necessitate a stronger transmission. GM has done a good job of putting a strong enough transmission in their vehicles for quite a while. Let’s not relive the W-body days of glass transmissions.
That would make sense going in the cross overs. being more FWD focused with a solid power rating. Maybe 290 hp (a 20hp drop) but something like 360 torque (a solid 100tq increase) would be welcomed. I just had a Highlander with the 2.4 turbo for a few days as a rental and that wasn’t bad. It wasn’t fast but it wasn’t slow. MPG was good but having that torque around was great. In a heavy vehicle give me a bunch of torque down low versus a bunch of HP up high. So this could be a good fit (though the 2.7 would be even better). This would leave the door open for a higher performance variant like a 3.0 turbo for premium models or performance models.
I’m just glad GM is still investing in I.C.E.
I’m thinking that this engine will be primarily for FWD/AWD vehicles, probably mostly suv’s, will probably incorporate smaller packaging. I don’t think this engine will make it into say the Colorado/Silverado.
As the person above me said, seems like that would be the best application for the 2.5T engine.
Thinking Traverse, high-spec next-gen Malibu (ICE), Blazer (ICE), base-Colorado (to replace current base-2.7), maybe base model next-gen Express & WT Silverado short-bed. Buick/GMC twins to similar Chevy models. Caddy’s – as the new 3.6/2.0 replacement?
Anything that says gm and turbo stay very far away from a ticking time bomb! Trust me I made the mistake of buying an ATS 2.0t worst car I’ve ever owned.
I can imagine that the GM variant management team finally understands that too many similar engines only cost pointless MONEY! You should also consider with the I-3 whether you need two engines, each with 1.2L or 1.3L!
The next big 4Bänger as a 2.5 liter will probably have the crankcase and the head identical to the current 2.0 liter LSY 4Bänger so that the production facilities can or could be standardized.
The HP and Nm specifications for turbo engines have been determined for years thanks to the control units and that is very simple! How about a top LSY with 300 HP and 500 Nm of torque?
N/A engines are still the top performance from Ings.!
Happy time today celebrating Father’s Day with great V8 N/A engines.
I think this 2.5L is for new FWD midsize and large crossovers like the Blazer and Traverse along with their Buick and Cadillac counterparts. GM also need to add some pizazz to their engine covers and stop with the cheap bs, they just fling on a cheap ass engine cover without anything on it.